You can use TELESIN Allin Box as CHARGER to simultaneously charge 3 batteries, as a high speed SD Card Reader, and as a STORAGE BOX to store 3 batteries and 3 SD cards.
Vivid unique design makes it stand out from the other brand chargers. This Compact and Light-weight Charger with dacron lanyard allows you to store it in your backpack/camera carry bag/luggage.
TELESIN Allin Box features IP54 Waterproof, the batteries and SD cards will be stored securely and stably, keeps water drops, dust and debris out of the charger box while in storage and transit.
Simply boost running time of your camera, keep your camera running for longer with Allin Box Charger. Fully compatible with original Go Pro Hero10 Hero9 black camera and batteries.
TELESIN Allin Box Charger is fully protected against overcharging, short circuit, and electronic shock, over discharge, over-temperature, over current, over voltage.